Jim “Mattress Mack” McIngvale made a bet with his customers last summer:

If a customer spent at least $3,000 at his Gallery Furniture store and the Astros won the World Series, then McIngvale would refund their purchase.

Last month, the Astros beat the Los Angeles Dodgers in Game 7, a win reportedly costing McIngvale and his store more than $10 million in rebates.

This week, McIngvale said he started writing the rebate checks, just in time for the holidays for more than 3,000 customers who took part in the program.

Many of these customers reportedly visited the store’s North Houston location on Sunday to pick up their checks, which McIngvale turned into an impromptu holiday party for both customers and employees.

Shortstop Carlos Correa, third baseman Alex Bregman, designated hitter Evan Gattis and team manager A.J. Hinch stopped by the store to take photos with customers and staff members, all during a rainstorm which caused the store to lose power for two hours.